COMPARISON OF APICAL TRANSPORT IN THREE ROTARY SYSTEMS AND ONE MODIFIED TECHNIQUE

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FARHAD A.R.; BAKHTIARI H.

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Journal: JOURNAL OF ISLAMIC DENTAL ASSOCIATION OF IRAN (MAJALLAH-I-DANDANPIZISHKI) Year:2005 | Volume:17 | Issue:(55) (SPECIAL ISSUE OF ENDO, PERIO) Page(s): 30-37

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Title

COMPARISON OF APICAL TRANSPORT IN THREE ROTARY SYSTEMS AND ONE MODIFIED TECHNIQUE

Author(s)

FARHAD A.R. | BAKHTIARI H. | Issue Writer Certificate

Keywords

APICAL TRANSPORTATIONQ4

ROTARY INSTRUMENTSQ4

MODIFIED TECHNIQUEQ4

Abstract

Background and Aim: Procedural errors such as canal transportation and loss of working length are mainly associated with stainless steel files with insufficient flexibility. APICAL TRANSPORTATION may also be attributed to the cutting or non-cutting tip of ROTARY INSTRUMENTS. The aim of this investigation was to compare APICAL TRANSPORTATION in three types of ROTARY INSTRUMENTS (Hero 642, Race and K3) using manufacturers' guidelines and a MODIFIED TECHNIQUE.Materials and Methods: Extracted maxillary or mandibular mesiobuccal roots of permanent human molars with a length of 19-23mm and curvature between 20 - 40 degrees (according to the Schneider method) were studied. The initial patency of the experimental canals was at least ¹10 and maximum ¹15. The samples were divided into six groups of twenty canals. In the first three groups, canals were instrumented using rotary systems according to the manufacturer's guidelines whereas in the 4th, 5th and 6th groups, prior to the instrumentation with ROTARY INSTRUMENTS, apical patency with ¹15 k hand file, ¹1-3 gates gliden, ¹2 peeso reamer and a full passive step back technique were used to create a better access to coronal and middle parts of the canal (modified technique). Statistical analysis was performed using Variance, Duncan and t-tests.Results: The mean degrees of APICAL TRANSPORTATION among groups instrumented according to the manufacturer's guidelines with Hero, Race and K3 ROTARY INSTRUMENTS were 2.79±1.12, 2.2±1.37 and 1.65±0.79, respectively and in samples instrumented with the MODIFIED TECHNIQUE 2.64±1.54, 2.10±1.40 and 1.93±1.23 degrees of APICAL TRANSPORTATION were recorded in Hero, Race and K3 instruments, respectively. There was a statistically significant difference between the first three groups (P<0.05) that were instrumented according to the manufacturer's guidelines, but no statistically significant difference was found in APICAL TRANSPORTATION between the MODIFIED TECHNIQUE groups and the manufacturer guideline groups (P>0.05).Conclusion: The use of MODIFIED TECHNIQUE, although leads to much easier instrumentation procedures, has no significant effect on the reduction of APICAL TRANSPORTATION degree as com- pared with the manufacturer's recommended method.

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APA: Copy

FARHAD, A.R., & BAKHTIARI, H.. (2005). COMPARISON OF APICAL TRANSPORT IN THREE ROTARY SYSTEMS AND ONE MODIFIED TECHNIQUE. JOURNAL OF IRANIAN DENTAL ASSOCIATION (JIDA) (MAJALLAH-I-DANDANPIZISHKI), 17((55) (SPECIAL ISSUE OF ENDO, PERIO)), 30-37. SID. https://sid.ir/paper/54749/en

Vancouver: Copy

FARHAD A.R., BAKHTIARI H.. COMPARISON OF APICAL TRANSPORT IN THREE ROTARY SYSTEMS AND ONE MODIFIED TECHNIQUE. JOURNAL OF IRANIAN DENTAL ASSOCIATION (JIDA) (MAJALLAH-I-DANDANPIZISHKI)[Internet]. 2005;17((55) (SPECIAL ISSUE OF ENDO, PERIO)):30-37. Available from: https://sid.ir/paper/54749/en

IEEE: Copy

A.R. FARHAD, and H. BAKHTIARI, “COMPARISON OF APICAL TRANSPORT IN THREE ROTARY SYSTEMS AND ONE MODIFIED TECHNIQUE,” JOURNAL OF IRANIAN DENTAL ASSOCIATION (JIDA) (MAJALLAH-I-DANDANPIZISHKI), vol. 17, no. (55) (SPECIAL ISSUE OF ENDO, PERIO), pp. 30–37, 2005, [Online]. Available: https://sid.ir/paper/54749/en

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